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It has been a challenge to realize high-quality X-ray imaging using oxide-based phosphors for avoiding halogenide-based materials and satisfying the requirements of environmental protection. In this study, lanthanide-doped nanocaged 12CaO·7Al2O3:Tb3+ (C12A7:Tb3+) X-ray imaging phosphors with strong photostimulated luminescence (PSL) have been prepared using a combustion method. X-ray diffraction (XRD),...
C12A7:0.5%Tb3+, x%Sr2+ X-ray phosphors with various concentrations were prepared by a combustion method. For the phosphor with the optimal concentration (x=5), the strongest green photostimulated luminescence (PSL), originating from the 5D4-7F5 transition of Tb3+ ion, can be achieved. It was found that its X-ray absorption capacity was increased and its X-ray dynamic range was extended after Sr doping...
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